The turbocharger uses exhaust gas to create air pressure which is then forced into the engine. When there is no demand for power, the exhaust gases are released into the exhaust through a waste gate to prevent the turbo from speeding up.

“Waste gate rattle” or “Turbo rattle” is a result of excessive movement between the waste gate and the waste gate seat. This is a progressive issue with the following symptoms:

Rattling at cold start

Rattling upon deceleration

Loss of power

Check Engine Light Illumination

Manufacturer Specific OBD trouble code P30FF

Very poor engine performance and MPG

Adjustment of the waste gate actuator can solve the issue, but the issue will return. If adjustment does not correct the issue, the turbocharger waste gate must be rebuilt with new bushings, or the turbocharger must be replaced. BMW has replaced many turbocharger assemblies under warranty to correct this issue.

The cost is $18,000ish and $19,000ish with a 36/36 warranty? I check CarFax for the history. Shows it was a lease and had 3 prior owners. Each kept the maintenance up. No history of accidents or concerns. Is this a good buy?

The in-tank fuel pump may have wire contacts that are not properly crimped, resulting in the wiring connector melting, fuel leakage and vehicle stalling. Dealers will replace the fuel pump module free of charge to resolve the concern.

The driver's frontal air bag inflator may not be welded properly and may separate upon air bag deployment. This would cause metal fragments to strike occupants, causing injury or death. Dealers will replace the driver's frontal air bag assembly free of charge to resolve the concern.

The passenger frontal air bag inflator may rupture on deployment, causing metal fragments to come through the air bag and injure occupants. Dealers will replace the passenger frontal air bag inflator or air bag module free of charge to resolve the concern.

2009 X5d. great mileage, 26 combined, 29-30 hwy. Drives nice and is a great looking vehicle. Had the check engine light on and it took 7 times over two years to finally fix. BMW does not seem to really care about cusomer issues. Other issues: sunroof would not close, battery died once and has been fine ever since. The interior is nice and it is a great car, just wish I didn't have to spe...

I brought this car and many malfunctions have occurred. First, there is the malfunction with the transmission and i had to get it fix for 6k but thnx god it was under the warranty. Next the screw fell off from the pipe and the it would make so many noises, it is disturbing and annoying. Finally there is a leakage in the oil and told me to refill multiple times i brought it to the shop and i wan...

Overall a great car ; I bought the car brand spanking new in April 2009 and have enjoyed its dynamic performance and shape.... However there are two annoying problems : 1. The FUEL PUMP warning indicator RANDOMLY FLASHES ON, sometimes 20 times a day, then nothing for 2 weeks!! This combined with the ANNOYING RINGING Sound of the BMW NANNY WARNING system becomes very irritating. There is no loss...